142 THE dairyman's MAI^^UAL. 



scribed tests. In our dairy we have found au iiiCTcase of 

 food at times to reduce the yield of milk and a decrease 

 to have the opposite result. One specially determined 

 fact, however, was clearly proved by some hundreds of 

 tests, and this was that the food had a most important 

 result upon the product of butter. This was denied by 

 the Director of the Xew York State Experiment Station 

 at the time, but his later tests fully corroborated the ac- 

 curacy of our statement, which has been fully accepted 

 by practical dairymen. Hence, foods rich in fatty mat- 

 ter are the best for the product of butter, and the choice 

 of those foods which are proved by careful tests made in 

 this manner, in each particular dairy, is odc of the most 

 important parts of the business of dairying. 



CoNDiMEXTAL Foods are those substances which arc 

 used to supply certain requiremeuts of the system, but 

 are supposed to be only suj)plementary to the ordinary 

 foods. Tlie term food includes any substance used for the 

 nutrition of animals, and we must also include water, for 

 seventy-five per cent of the body of an animal consists 

 of this fluid, and salt as well, for this substance enters 

 largely into the composition of an animal. Tlie follow- 

 ing table gives the quantity of salt (sodium chloride) con- 

 tained iu the various parts and secretions of an animal : 



SALT CONTAINED IN AN ANIMAL. 



In 150 pounds of live weight 4 pounds 163 c:rains. 



In the blood - 3.:39 parts in 1,000 



In the female blood 3.90 parts in 1,000 



In the ash of blood - 54.76 parts in 100 



In the liquor sanguinis 6.98 parts in 1,000 



In the pulmonary mucous 5.82 parts iu 1 ,000 



In the sebaceous matter of the skin (oily 



secretion) 37.00 parts in 1,000 



In the perspiration 2.23 parts iu 1 ,000 



In the secretion of the eye (tears) 13.00 parts in 1,000 



In the saliva of the mouth 84 parts in 1,000 



In the saliva of parotid glands - 3.06 parts in 1,000 



In the gastric Ihiid.- - 1.70 parts in 1,000 



In the pancreatic fluid - 7.36 parts in 1,000 



In the bile (of the ox) 15.00 parts iu 1,000 



In the lymph 5.00 parts in 1,000 



In the bones of an ox 3.45 parts in 100 



lo tho bones of a man -. 1.20pai'tsin 100 



